Hi all,I have a WIFI connection (I have no control over router).When I'm connected there is a strange high one way network traffic. System monitor shows nearly 500KB/s when without any network application running.

I tried to discover which process deals with it but with no success. The only information I was able to receive is from 'jnettop'. It looks like this:

Do you mean samba? I didn't configure it by myself. Just used default settings. And there is a link in nautilus for network were other computers can be seen. So I can possibly answer yes, it's been set up.

...Searching for suspicious files and dirs, it may take a while... The following suspicious files and directories were found: /usr/lib/python2.7/dist-packages/PyQt4/uic/widget-plugins/.noinit /usr/lib/pymodules/python2.7/.path /usr/lib/pymodules/python2.6/.path /usr/lib/python2.6/dist-packages/PyQt4/uic/widget-plugins/.noinit /usr/lib/jvm/.java-1.6.0-openjdk-amd64.jinfo /usr/lib/jvm/.java-6-sun.jinfo /usr/lib/jvm/java-6-sun-1.6.0.26/.systemPrefs...Checking `sniffer'... lo: not promisc and no packet sniffer socketswlan0: PACKET SNIFFER(/sbin/wpa_supplicant[2407], /sbin/dhclient[12522])...

lsof -i didn't show anything unusual too, but without that traffic it doesn't mean anything.

Yes I'm mostly on default installation, tried to do minimal changes to main system. But my system was installed 2 years ago and get through all upgrades. It works nicely, even got through gnome update ufw is in default state, i.e. turned off. Now I should turn it on.

For several days that traffic is gone. May be there was some other computer in the network, that caused it.So for now this question can be put aside.